Use latest version of Sequelize

[remjx]

When I installed this package, I got this dependency tree:

info All dependencies
├─ @types/geojson@1.0.6
├─ generic-pool@3.5.0
├─ js-string-escape@1.0.1
├─ retry-as-promised@2.3.2
├─ sequelize-views-support@1.2.2
├─ sequelize@4.44.4
├─ terraformer-wkt-parser@1.2.1
└─ terraformer@1.0.10

However in the package.json of this package sequelize@^6.0.0 is in the dependencies. And Sequelize 6 is not even out yet. Can someone explain this discrepancy?

I am currently using Sequelize 5 in my project. Is this package only compatible with Sequelize 4?